Parallels Explorer can open a W2K VM just fine. However, PE has a problem with a Boot Camp WXP VM. My VMs are located on a secondary internal drive (not the boot drive). Both VMs are working just fine. I am using the Paralles Desktop version 3.0, build 5226. OS X 10.5.5, Mac Pro early 2008, single 2.8 GHz quadcore CPU, 4 GB of RAM. Not sure if you will be able to see the attached picture with the error. The first sentence of the error reads: "Parallels Explorer is unable to open the virtual machine file." What can I do to fix this problem? And thank you for your help. Olaf PS I tried searching for the string in the subject line but (to my surprise) found nothing. Any search tips are also appreciated.